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Categories / ASP.Net Tutorial / File Directory
 

Enumerating file system directories (VB)

<%@ Page Language="VB" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)         For Each drive As System.IO.DriveInfo In System.IO.DriveInfo.GetDrives()             Dim node As TreeNode = New TreeNode()             node.Value = drive.Name             If (drive.IsReady) Then                 node.Text = drive.Name & " - (free space: " & drive.AvailableFreeSpace & ")"                 LoadDirectories(node, drive.Name)             Else                 node.Text = drive.Name & " - (not ready)"             End If             Me.TreeView1.Nodes.Add(node)         Next             End Sub     Private Sub LoadDirectories(ByVal parent As TreeNode, ByVal path As String)                  Dim directory As System.IO.DirectoryInfo = _                   New System.IO.DirectoryInfo(path)                  Try             For Each d As System.IO.DirectoryInfo In directory.GetDirectories()                              Dim node As TreeNode = New TreeNode(d.Name, d.FullName)                 parent.ChildNodes.Add(node)                 'Recurse the current directory                 LoadDirectories(node, d.FullName)             Next         Catch ex As System.UnauthorizedAccessException             parent.Text += " (Access Denied)"         Catch ex As System.IO.IOException             parent.Text += " (Unknown Error: " + ex.Message + ")"         End Try     End Sub </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">     <title>Untitled Page</title> </head> <body>     <form id="form1" runat="server">     <div>         <table>             <tr>                 <td valign="top">                     <asp:TreeView ID="TreeView1" runat="server"></asp:TreeView>                 </td>             </tr>         </table>         </div>     </form> </body> </html>